Bull bar



FIG. 1 is a top, front, and right-side perspective view of a bull bar showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a bottom, front, and right-side perspective view thereof.

The broken lines represent portions of the bull bar that form no part of the claim. 

CLAIM The ornamental design for a bull bar, as shown and described. 